JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://api-maps.yandex.ru/2.1.6/?load=package.full,pane.MovablePane&amp;lang=ru-RU&amp;mode=debug"></script>
<script src="http://dimik.github.io/ymaps/examples/heatmap/test-data.js"></script>
<script src="http://dimik.github.io/ymaps/examples/heatmap/heatmap.js"></script>
<script src="http://blog.liiion911.ru/ymaps-heatmap-layer.js"></script>
<div id="map" style="width: 640px; height: 480px;"></div>

JavaScript

ymaps.ready(function () {
        var myMap = new ymaps.Map('map', {
                center: [55.751574, 37.573856],
                zoom: 3
            });

        var heatmap = new HeatMapLayer(myMap, {
            radius: 20,
            visible: true,
            opacity: 60
        });

        heatmap.setData(testData);
    });